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4.5mm TeleVue Delos?

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#1 Scanning4Comets

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Posted 03 July 2013 - 10:12 PM

I'm currently looking for an excellent high power eyepiece. I will be using it for planets, (Saturn and Jupiter), and some globulars and smaller targets.

I am very interested in the 4.5mm TeleVue Delos.

I once owned the 6mm Delos which was outstanding. What are your thoughts on the 4.5mm TV Delos?

Cheers,

#2 John F

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Posted 03 July 2013 - 11:10 PM

A few weeks ago I was treated to one of the best views of Saturn I've ever had in my life when using the 4.5mm Delos in an NP127 Apo Refractor at 147x (29 xpi). The same eyepiece also provided me with the best view of M13 I've ever experienced before when viewing that object through this scope.

Likewise, a friend who was observing with me that night was also very impressed with the views provided by the 4.5mm Delos and ordered one for himself the next day.

John Finnan

#3 Starman81

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Posted 04 July 2013 - 12:38 AM

My thoughts on the 4.5mm Delos is that there is a Pentax XW very close to that focal length.

:yay:

In all seriousness, I hope you get a chance to try one out (the 4.5 Delos). I keep getting tempted by the sale but have held off so far.

#4 Ron Luxemburg

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Posted 04 July 2013 - 02:37 AM

The 4.5 does fantastic in my 155EDF, I'm probably going to get the 3.5 eventually. I'm extremely happy with the Delos line and currently have 4. I compared my 9mm Nagler T1 to the 8mm Delos and the Delos was sharper and had better contrast. I don't think you can go wrong with the Delos.

#5 Scanning4Comets

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Posted 04 July 2013 - 06:51 AM

I may have to go with a 5.2mm Pentax XL again, which will be close to the same field as a 4.5mm Delos, and 1/3rd the cost!

Yes, I know what you're all thinking: "You had a 5.2mm Pentax XL before" :foreheadslap:

:roflmao:

#6 russell23

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Posted 04 July 2013 - 07:06 AM

Mark,

Why are you thinking of a 5.2mm XL when you already have a 5.5mm UWA?

Dave

#7 Illinois

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Posted 04 July 2013 - 07:25 AM

I think forget it! You already have 5.5 mm UWA and save over 300 dollars! I rare lower than my 6.7mm eyepiece! Look at planet is not much different between I have 3, 5 and 6.7 mm eyepieces. Its just personal and if you want 4.5 mm TV Delos then buy it but you might not see much different between 4.5 mm and your 5.5 mm eyepiece! Up to you!

#8 Scanning4Comets

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Posted 04 July 2013 - 07:57 AM

Mark,

Why are you thinking of a 5.2mm XL when you already have a 5.5mm UWA?

Dave


Drift timing of my 5.5mm UWA nets me 206x. I drift timed the 5.2mm XL when I owned one and it got me 235x. The 5.2mm XL actually worked as a 5.1mm EP and the 5.5mm Meade is working as a 5.8mm EP.

235x is just the bit more I could use!

I've said this before, and I'll say it again: Not all eyepieces are what they appear on the barrels.

I think forget it! You already have 5.5 mm UWA and save over 300 dollars! I rare lower than my 6.7mm eyepiece! Look at planet is not much different between I have 3, 5 and 6.7 mm eyepieces. Its just personal and if you want 4.5 mm TV Delos then buy it but you might not see much different between 4.5 mm and your 5.5 mm eyepiece! Up to you!

--------------------
Astronomer since 1975!


5.5mm = 206x
4.5mm (if it is accurately a 4.5mm and knowing Televue it will be very close) = 267x

I'd say there is a difference there.....

.....OR, I could also get rid of the 5.5mm also and still get the 4.5mm Delos!

So, I'd be jumping from my 9mm ES 100 to my 4.5mm Delos if I did that.

#9 tomharri

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Posted 04 July 2013 - 07:57 AM

In my 10" f/5.6 need .5mm steps in eyepiece line up:
mm-power
3----474
3.5--406
4----356
4.5--316
5----284
6----237
Having 40-50 power between each step allows you to sneak up on the maximum magnification that the atmoshere allows that night.
And the Delos are such good fillers between the Pentaxes already have.
Radians are the next best choice at 3& 4mm's.

#10 Damo636

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Posted 04 July 2013 - 09:22 AM

I'd place a wanted ad for a 5mm XW! I've just had my first season with mine and found it nothing short of superb, pretty close to perfection really!

#11 JustaBoy

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Posted 04 July 2013 - 09:26 AM

"Drift timing of my 5.5mm UWA nets me 206x. I drift timed the 5.2mm XL when I owned one and it got me 235x. The 5.2mm XL actually worked as a 5.1mm EP and the 5.5mm Meade is working as a 5.8mm EP."

"Not all eyepieces are what they appear on the barrels"


Hi Markus,

Drift timing will tell you TFOV, but what else does it really tell you? Did you factor in Distortion? What kind of distorion? How much of it? Are you Sure that the AFOV is actually what the maker stated?

You are just as well off believing what the maker says in regards to Mag, because the drift time will tell you nothing about it.

Thanks,

-Chuck

#12 ibase

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Posted 04 July 2013 - 09:43 AM

Mark, go for it, hello Delos once again; sometimes on EP acquisition, it's not necessary to explain one's self. :)

Best,

#13 Scanning4Comets

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Posted 04 July 2013 - 02:21 PM

Well,

Even if I just get the 5mm XW or 5.2mm XL, it will be a LOT better on planets than my Meade 5.5mm. The difference in quality in the glass is quite noticeable. I look at deep sky more, and it will be better on globs, etc too. Saturn and Jupiter are a lot more CRISP in the Pentax and Delos eyepieces, (I used to own the 6mm Delos).

PS: I've been drift timing my eyepieces for years....It gets me in the ballpark figure which is ALL I need to know.

So....I won't go wrong with either eyepiece, I was just curious about the 4.5mm Delos.

Cheers,

#14 cpr1

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Posted 04 July 2013 - 02:37 PM

I have a 4.5mm Delos coming. I also have the 6mm Delos already. The 6mm is excellent best I ever used.

Since you had the 6mm Delos before how did it compare to your 5.5mm meade UWA? THX.






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